UBS Wealth Planning Analyst Final Interview

Invited to the last round next week. They said the day would last from 9-2pm now they're saying 10:30 AM for a 30 min. interview... any thoughts on the change? also what should I be expecting them to ask me since all three already phone screened me and therefore have talked to me before. Either they don't like me and want to move on (hence 30min) or they like me and want to get the interview done quick and send me an offer.

advice pls!